One of the strongest Atlantic storms ever recorded, Irma packed winds up to 185 mph, flooded streets, knocked out power lines, destroyed homes, and led to the deaths of at least 41 people.

A Citi analyst estimates that costs could top $50 billion in the US. Though FEMA estimates that 25% of Key West homes are destroyed, the damage in Florida was not as extensive as in the Caribbean, especially in places like St. Martin, Barbuda, and the US Virgin Islands.

Earlier this week, companies that operate satellites and sell the image data — like Deimos Imaging, UrtheCast, and DigitalGlobe— published before-and-after photos of affected areas, including Key West and the Caribbean.

Here are some of the most dramatic views of the devastation. To compare pre- and post-Irma images, drag the slider to the left and right.